Some of the replies to that article are rather startling. It just goes to show that no matter what you do, someone will find fault with it, but good looks to these researchers. I always learned more on my own.

This is like super cool, but I am a little worried about the implications that the children were basically involved in an experiment without consent from anyone which is an ethical problem. If anyone got hurt

Example: study of correlation between migraines and a hole in the heart. Plug the hole, migraines get better. Except there were some unsuspecting controls who thought they had the operation and didn't.

Unauthorized testing used to happen more often. Funny story: When the Vanderbilt charity clinic testing story broke, one of the test subjects had grown up to be a doctor and was actually teaching at Vanderbilt.

I understand the ethical concerns, but would the experimenters been at fault if one of the children decided to use a tablet to whack others over the head? It's hard to draw the line between reasonable concern +

These kids live in a very dangerous world, risk of dying as a child is huge. Life expectancy is not really great. Those tablets can actually change that for the better. This is the world they will be living in.